Charles e



(No Model.)

0. E. LIPE. HUB BORING MACHINE.

N0. 555,253. Patented Feb. 25, 1896.

%2 ATTORNEYS UNITED STATES PATENT OFFICE.

CHARLES E. LIFE, OF SYRACUSE, NEIV YORK, ASSIGNOR TO HARVEY A.

- MOYER, OF SAME PLACE.

HUB-BORiNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 555,253, dated February25, 1896.

Application filed February 7, 1894. Serial No. 499,389. (No model.)

To all whom it may concern:

Be it known that I, CHARLES E. LIFE, of Syracuse, in the county ofOnondaga, in the State of New York, have invented new and usefulImprovements in Hub-Boring Machines, of which the following, taken inconnection with the accompanying drawings, is a full, clear, and exactdescription.

This invention relates to the class of machines which are employed forboring out wheel-hubs preparatory to inserting therein the metallic boxfor the axle and for forming in the outer end of the hub the necessaryrecess for the reception of the nut which is to be applied to the end ofthe axle.

My present invention consists in an improved organization of themachine, which possesses superior efiiciency and accuracy in itsoperation, substantially as hereinafter more fully described andspecifically set forth in the claims.

In the accompanying drawings, Figure 1 is a side elevation of ahub-boring machine embodying my invention. Fig. 2 is a front elevationof the same. Fig. 3 is a horizontal transverse section on line as a: inFig. 1; and Fig. l is a vertical transverse section of the connection ofthe upper spindle and its driving-pulley.

Similar letters of reference indicate corresponding parts.

P represents a stout metallic pedestal which is firmly secured in itsposition and has arms P P" extending laterally from it toward the frontof the machine and disposed one above the other. The free end of each ofthese arms is provided with a bearing in which is journaled one of thespindles to which the boring-tools are attached in the usual andwell-known manner, not necessary to be here shown. a and 0, denote thesaid spindles, which are disposed vertically and in line with each otherand receive rotary motion by one and the same driving-belt B in thefollowing manner: Each of said spindles is equipped with a pulley C,which is sustained in a uniform plane on the arm of the pedestal.

In the drawings is indicated a driving mechanism for operating bothpulleys C by a single belt B, whereby the construction is rendered morecompact and the operation of the spindles more synchronous, said drivingmechanism embracing a shaft I) mounted in suitable hearings on therearof the pedestal P, pulleys A A and A A suitably mounted thereon, and theendless driving-belt B running upon the rear faces of pulleys A A andfront faces of the pulleys C 0 upon the two spindles a. a, said shaft 1)deriving its motion from a suitable motor (not shown) having beltconnection with the pulley A thereof. As this driving means forms nopart of my present invention a more particular description of it is notdeemed necessary. Each of the spindles is connected to its pulley by aspline or feather, as illustrated in Fig. 4 of the drawings, to allowthe spindles to move vertically while their pulleys are maintained inuniform planes. The upper pulley C is preferably provided with a conicaldust-cap C, as shown.

D representsa horizontal frame upon which to support the wheels to beoperated on. Said support is sustained stationary between the two arms PP by any suitable means. In order to readily adjust the wheel upon saidsupport, so as to bring the center of the hub in line with the twospindles a a, I employ the wheel-centering plunger 0, the stem of whichpasses through a vertical channel formed in the upper arm P, whichchannel guides the plunger in its movement. The lower end of saidplunger has horizontally projectingfroin it a ring 0, the center ofwhich is in line with the axis of the spindles a a. Said ring is of sucha diameter as to allow it to embrace the back portion of the hub of thewheel laid upon the support D. I also utilize the aforesaid plunger forsteadying the upper spindle, a, by attaching to the ring 0 or foot ofthe plunger the vertical guide-rods cl d,

the upper ends of which slide in sleeves e 6, attached to the arm P. Onthese rods is clamped the yoke f, which is provided with a verticalchannel through which the spindle it passes and in which it is fittedclosely sufficiently to steady the spindle without producing unduefriction during the rotation of the same.

An important objectof this invention is to so construct the machine thatthe upper spindle, a, and plunger 0 will both be sustained normally inelevated position by means of a single tension-spring and may bedepressed severally or together by levers. This object is accomplishedby the preferred mechanism now to be described. To the upper end of saidspindle a is swiveled ablock g, to which is connected a lever '2', whichextends rearward therefrom and is fulcrumed near its rear end on a propj, the lower end of which is attached to the arm P of the pedestal, andto the upper end of the plunger 0 is connected the front arm of a leverZ, which lever is fulcrumed on a post 17, secured to said arm P, and hasits rear arm connected by link Z with the front arm of a lever Z, therear arm of which lever is pivoted to said arm of the pedestal by thepin supporting said prop. The free end of said rear arm of lever Zisconnected with the rear end of lever 2' by a tensionspring h, the actionof which is to lift both the spindle a and plunger 0 and hold them innormally elevated position. The spindle is depressed against the actionof said spring by means of a manually-operated lever L, pivoted to thepedestal P and connected to lever i by a rod n, and the plunger isdepressed against the action of said spring by means of a lever L, whichis also pivoted to the pedestal and is connected to the foot of theplunger.

From this description of levers it will be understood that if theoperator presses downward upon both levers L and L simultaneously theupper spindle, a, and the plunger will be lowered together and the rearends of levers i and Z will move away from each other, thus elongatingspring h, whereby said spring in resuming its normal position when saidlevers L and L are released will be caused to pull downward upon levert' and upward on lever Z and thereby lift both the spindle a and plunger0 and hold said spindle and plunger in elevated position until levers Land L, or either of them, are again operated. It will also be understoodthat either the spindle or the plunger may be lowered alone bydepressing its lever. The free ends of said levers are in front of themachine and convenient to be operated by the attendant of the machine.The lower spindle, a, is normally sustained in its depressed position bygravity and is connected at its lower end to an arm 0, pivoted at oneend to the pedestal P and connected at the opposite end to a treadle 25by means of a chain t running over a sheave u, pivoted to a hanger a onthe under side of the wheel-support.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. In combination with the pedestal and wheel-support, thevertically-movable spindle and wheel-centering plunger, a lever Zpivoted thereto and fulcrumed intermediate its ends, a compound lever Iconnected with said lever Z, a swiveled block on the upper end of thespindle, a lever pivoted thereto, a prop on the opposite'ends of whichleversZ and i are fulcrumed, a spring connecting the free ends of saidlevers l and 1' together, and means connected with said lever i fordepressing said spindle.

2. In combination with the pedestal and wheel-support, thevertically-movable revolv ing spindle and wheel-centering plunger,levers connected to said spindle and plunger, a spring operating saidlevers in common and sustaining the spindle and plunger in theirelevated position, and manually-operated levers pivoted to the pedestaland connected to the spindle and plunger to depress the same, as setforth.

3. The combination of the pedestal provided with laterally-projectingarms disposed one above the other, a wheel-support sustained betweensaid arms, vertically-movable revolving spindles pivoted in said arms, awheel-centering plungcrguided in the upper arm, compound leversconnected to the said plunger, a single levereonnected to the upperspindle, a tension-spring connected to the free ends of said levers, aprop connected at opposite ends to the levers adjacent to the spring,and manual ly-operated levers pivoted to the pedestal and connected tothe aforesaid plunger and upper spindle to depress the same as setforth.

In testimony whereof I have hereunto signed my name this 16th day ofAugust, 1893.

CHARLES E. LIPE. [L.

lVitnesses J. J. LAASS, O. L. BENDIXON.

